Rotational Raman lidar for stratospheric ozone measurements

Giorgio De Nunzio; Clementina Panzera; Maria Rita Perrone

doi:10.1117/12.275161

26 May 1997 Rotational Raman lidar for stratospheric ozone measurements

Giorgio De Nunzio, Clementina Panzera, Maria Rita Perrone

Proceedings Volume 3104, Lidar Atmospheric Monitoring; (1997) https://doi.org/10.1117/12.275161
Event: Environmental Sensing III, 1997, Munich, Germany

Abstract

Excimer lasers in conjunction with Raman shifting techniques have commonly been used to get a multi-wavelength laser source for sounding of tropospheric and stratospheric ozone by differential absorption lidar (DIAL) systems. Stimulated vibrational Raman scattering in high-pressure gases as H₂ and D₂ has generally been used for shifting the output of high power excimer lasers to different wavelengths. In this paper it is shown that the stimulated rotational Raman scattering (SRRS) can also be efficiently employed to get laser radiation at the wavelengths required for DIAL measurements. In particular the first rotational Stokes generated by stimulated Raman scattering in H₂, pumped by a XeCl excimer laser at 308 nm, is at 314 nm, and the wavelength pair 308 nm/314 nm may be quite suitable for DIAL measurements of stratospheric ozone. The experimental conditions to optimize the Raman conversion to the first rotational Stokes are found in this paper, demonstrating that energy conversion efficiencies as high as 38% are obtainable with circularly polarized pump radiation.

Citation Download Citation

Giorgio De Nunzio, Clementina Panzera, and Maria Rita Perrone "Rotational Raman lidar for stratospheric ozone measurements", Proc. SPIE 3104, Lidar Atmospheric Monitoring, (26 May 1997); https://doi.org/10.1117/12.275161

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